High frequency: Legato 3.1 vs IVY Options  Watch this topic  Print this topic  Atom Feed  RSS Feed View » Normal Threaded

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charly		#1 Posted : Wednesday, May 22, 2013 8:29:47 PM(UTC)
Rank: Member Groups: Member Joined: 9/24/2012(UTC) Posts: 30 Location: Santiago		Hi, This weekend I compared Legato 3.1 vs IVY on my BuffaloIII DAC. In my experience, IVY High frequency (tweeters) are much louder than my Legato 3.1 I Like Legato detail but I think it lacks Highs... 1) Is this normal, or should I think that there is an issue with my Legato board? Best, Carlos
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Russ White		#2 Posted : Wednesday, May 22, 2013 9:20:18 PM(UTC)
Rank: Administration Groups: Administration, Customer Joined: 10/24/2006(UTC) Posts: 3,979 Location: Nashville, TN Thanks: 25 times Was thanked: 89 time(s) in 83 post(s)		Are you using the balanced or SE outputs? Or both?
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charly		#3 Posted : Wednesday, May 22, 2013 9:21:18 PM(UTC)
Rank: Member Groups: Member Joined: 9/24/2012(UTC) Posts: 30 Location: Santiago		Hi Russ, I am using Balanced.
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Russ White		#4 Posted : Thursday, May 23, 2013 2:51:43 AM(UTC)
Rank: Administration Groups: Administration, Customer Joined: 10/24/2006(UTC) Posts: 3,979 Location: Nashville, TN Thanks: 25 times Was thanked: 89 time(s) in 83 post(s)		You can reduce or omit C1-C4. But the Corner frequency is already very high.
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charly		#5 Posted : Thursday, May 23, 2013 2:54:19 PM(UTC)
Rank: Member Groups: Member Joined: 9/24/2012(UTC) Posts: 30 Location: Santiago		Thanks. I will try to remove those and see what happens. With such low values, could it be possible I have a roll-off efect by cables or something? Or could transistors or caps be out of spec? I can publish photos and have a scope so can do mesurements if requiered. Best
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charly		#6 Posted : Monday, May 27, 2013 3:55:54 PM(UTC)
Rank: Member Groups: Member Joined: 9/24/2012(UTC) Posts: 30 Location: Santiago		I removed C1 to C4 from Legato, I didn-t noticed any change in sound. I conclude that Legato highs are rolled off, compared to IVY stage, and that is what gives Legato a more subtle character, since mids shows more present, due to the lack of highs... I am sure this is what gives IVY its more punchy character.
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Russ White		#7 Posted : Monday, May 27, 2013 9:22:15 PM(UTC)
Rank: Administration Groups: Administration, Customer Joined: 10/24/2006(UTC) Posts: 3,979 Location: Nashville, TN Thanks: 25 times Was thanked: 89 time(s) in 83 post(s)		There is nothing (no filter) to roll off the highs, in fact most people would say it is quite flat in terms of response. :) IVY actually has a more aggressive low pass filter than Legato. :) You may actually have some impedance mismatch - or something attenuating downstream.
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charly		#8 Posted : Monday, May 27, 2013 9:29:14 PM(UTC)
Rank: Member Groups: Member Joined: 9/24/2012(UTC) Posts: 30 Location: Santiago		Thanks Russ. I will try to measure, to figure out what the heck is going on here. Best,
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Brian Donegan		#9 Posted : Tuesday, May 28, 2013 2:34:54 PM(UTC)
Rank: Administration Groups: Administration, Customer Joined: 10/24/2006(UTC) Posts: 2,868 Location: Massachusetts, USA Thanks: 2 times Was thanked: 141 time(s) in 134 post(s)		Check the values of the filter caps on your IVY. A handful of kits went out with the values mixed up, but I am fairly sure I caught all of them at this point. (C1-C4 should be 15nF, not 0.1uF.)
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